Begginer Speedlite 430 EX II Question

I am a begginer. I just got my first DSLR camera in February, a Canon Rebel T2i. Yesterday I recieved the Canon 430EX II flash I ordered. I was trying to take action pics of the dogs indoors. I had the flash set at ETTL mode and the camera is in shutter priority mode which I set at 1/800 sec and higher. I just noticed when previewing my pics on the LCD monitor that all the pics were taken at 1/200 sec. I did realize that the camera would only synchronize with non canon flash units at 1/200 sec or slower and that is why I did not purchase one. Any feed back would be appreciated.

Put the flash in HSS mode.

egordon99 wrote in post #12240275
Put the flash in HSS mode.

Thanks so much! It works now!

Generally, I leave my Speedlites in HSS mode. If not needed (for faster than normal shutter sync speed), they function as usual. If you need that speed, they're automatically ready.

My question is why would you set your shutter speed to 1/800th indoors? I can't imagine the results would be all that pleasing.